WIFI, no ip, Smurf attack??

Hi, I have two laptops that connect to my Belkin router via wireless.One of laptop can no longer pick up an ip address and in order to connect to the network, I have to use a ethernet cable.I am entering the WPA key correctly.

I have looked at the router logs and have spotted this, could this be related?(IP address 192.168.2.3 is the address of the laptop that can see the network).

I have exactly the same on my Belkin router even same IP's is that right??? My wireless activity light flashes even when my pc & laptop are off! Do i take it my connection is being piggybacked? I've enabled MAC filtering for my two machines onlyor is this my ports being scanned? Should I invest in a hard firewall?

I also have a Belkin wireless router, and am getting the same warnings about a smurf attack. But my wireless router is inside a private network, behind another router. On my network this is not an external attack.

Is there a possibility that at least one of these machines is a Mac? Remember the automatic zero-conf style local network capability that OSX machines have.

I also have a Belkin wireless router, and am getting the same warnings about a smurf attack, caused by multiple broadcast pings. But my wireless router is inside a private network, behind another router. On my network this is not an external attack.

Is there a possibility that at least one of these machines is a Mac? Remember the automatic zero-conf style local network capability that OSX machines have.

I understand that through Bonjour, the mac allocates itself a private address in the subnet 169.254. It broadcasts requests (possibly pingss) broadcast address 169.254.255.255 in order to identify other local machines. This enables some of the ad hoc file sharing, itunes sharing and other network capability eg. your_name's_computer.local name lookups without a name server. You may want to check netstat -r

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